Manufacture of roof dental plates.



PATENTED NOV. 28, 1905.

v P. J. MALONE.

MANUFACTURE OF ROOF DENTAL PLATES.

APPLICATION FILED APR. 26, 1905.

, UNITED STATES PATENT oEEIoE. PETER MALONE, OF ALIOON A, PENNSYLVANIA.MANUFACTURE OF ROOF DEN'I 'AL PLATES.

, Specification of Letters Patent.

Patented. Nov. 28, 1905.

Application filed April 26, 1905- Serial No 257,478-

.lo all Zak/0112, it may concern:

Be it known that I, PETER J. MALONE, a'citizen of the United States,residing at Altoona, in

. which the following is a specification.

.product of said invention.

My invention relates to improvements in. the manufacture of dentalplates particularly for the roof of the mouth.

It has for its object especially to sharply or clearly define just thoseportions of the roof of the mouth with which the effective edges of thedental plate may engage to secure the requisite impinging or retainingaction therefor to prevent the displacement or dropping out of the mouthof said plate and yet reduce to the minimum any discomfort arising fromthe use thereof. I

The nature of my invention consists of so producing the model as toprovide for the molding of the plate that the latter shall beeffectively retained in place in the mouth.

In the accompanying drawings,'Figure 1 is a perspective view of themodel produced upon the lines for carrying out my invention. Fig. 2 is adental plate which is the resultant or Fig. 3 is a crosssection of saidmodel.

In the disclosure of myinvention I take the required impression of theroof or upper part I of the mouth upon the required material, such beingeffected in the usual way, as well un derstood by those conversant .withthis art.

In making or producing this impression with the view of obtaining amodel 1 thereof care should be taken to note that in said impressioncertain lateral outlines 2 shall clearly appear therein which are commonto the interior or roof of the normal mouth. These outlines aresuggestive or indicative of relatively soft or cartilaginous partsintermediately of the bone and gum portions, as has been practicallydemonstrated, andwith the view of unerringly locating and effectingengagement therebetween and the effective edges 3 of the dental plate 3is the purpose of this invention. With said edges of said plate thusdisposed with relation to the roof-of the mouth an effective impingingaction is produced whereby the use of the ordinary air-chamber orsuction action is not required, while ease and'comfort are promoted,which would not be experienced with the plate edges in contact with thebone or gum por'tions of the mouth, as is apparent. I

I have found in the practice of my inven-' tion that the dental platesformed thereby invariably retain their grip in the mouth as againstdislodgment from any of the usual causeswhich have resulted in thedisplacement of those plates heretofore in use which have come under myobservation.

I claim A dental-plate mold having the roof-mouth impression, with theinner surface thereof for producing the gum portions, formed with acontinuous lateral indentation or recess inter mediately of the roofimpression proper and the outer extremities of said gum-producingportion.

In testimony whereof I aflix my signature in presence of two subscribingwitnesses.

PETER J. MALONE.

